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[Discuss-gnuradio] packed_to_unpacked--->chunks_to_symbols
From: |
Vincenzo Pellegrini |
Subject: |
[Discuss-gnuradio] packed_to_unpacked--->chunks_to_symbols |
Date: |
Tue, 20 Feb 2007 11:47:18 +0100 |
hello guys,
thank you Josh, Achilleas and Eric for the very precious help! :)
I've been working upon your suggestions and what I did is:
file_source_bytewise=gr.file_source(gr.sizeof_char,
"/mnt/root/gnuradio_datastreams/1.MPG")
file_chunker=gr.packed_to_unpacked_bb(2,1) #second argument is
endianness (??)
constellation=array((1+1j,1-1j,-1-1j,-1+1j),Complex)
print constellation
symbol_mapper=gr.chunks_to_symbols_bc(constellation, 1)
self.connect(file_source_bytewise,file_chunker,symbol_mapper)
self.connect(symbol_mapper,series_to_parallel,inverse_fft,parallel_to_series,gain,self.u)
which connected to an inverse fft and then sent out brings out the
attacched screenshot.
is the constellation mapping well done? (in terms of block usage I mean)
thanks for help and attention
vincenzo
ps
I'm trying to move as close as possible to ofdm with qpsk mapping on the
python level..
OFDM-QPSK??.png
Description: PNG image
- [Discuss-gnuradio] packed_to_unpacked--->chunks_to_symbols,
Vincenzo Pellegrini <=